I've just installed Ice Cream Sandwich over the air update on this tab, nice graphics very smooth to touch.

I'm waiting for Vodafone to get round to the ICS release on the Tab 10.1 I've got. Will keep twiddling my thumbs for a little longer.

Install Apex Launcher.

Have you noticed any glitches ('clicks') in the audio?

I'm getting this but I don't know if it's the ICS update or something else.

This tablets still looks and acts awful even with ICS (down to TouchWiz). I'd just install a plain vanilla custom ROM if you know how.

On closer inspection the machine is actually freezing, the video stops briefly as well as the audio.

I will try a few custom ROMs and see if they improve things.